The Royal Deux-Ponts Regiment (French: Régiment Royal-Deux-Ponts; German: Infanterieregiment Königlich Zweibrücken) was a line infantry regiment of the French Royal Army raised in the Palatine Zweibrücken which existed from 1757 to 1791.

The Royal Deux-Ponts Regiment was raised by Christian IV, Duke of Deux-Ponts, Count Palatine of Birkenfeld, under a treaty made in 1751 between Louis XV and Christian, by which the Duke undertook to provide in the event of war a contingent of 1,000 men to France.

The Marquis was colonel-commandant from March 10, 1788 until January 1, 1791, when it was reorganised into the 99th Line Infantry Regiment.

[1] The Royal Deux-Ponts Regiment left Brest on April 4, 1780 as part of a contingent of four regiments sent by France under the orders of Rochambeau to provide support to the American Revolution.

[4] During the American Revolutionary War, the uniform was sky blue with distinctive yellow facings.